Improvement : club not able to book negative number of places#356

Tit-Co wants to merge 5 commits intoOpenClassrooms-Student-Center:masterOpenClassrooms-Student-Center/Python_Testing:masterfrom

Tit-Co:improvement/club-not-able-to-book-negative-number-of-placesTit-Co/OpenClassrooms_Project_11:improvement/club-not-able-to-book-negative-number-of-placesCopy head branch name to clipboard